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iix :: Ixed m => Index m -> IndexedTraversal' (Index m) m (IxValue m)

lens	Control.Lens.At

An indexed version of ix.

>>> Seq.fromList [a,b,c,d] & iix 2 %@~ f'
fromList [a,b,f' 2 c,d]

>>> Seq.fromList [a,b,c,d] & iix 2 .@~ h
fromList [a,b,h 2,d]

>>> Seq.fromList [a,b,c,d] ^@? iix 2
Just (2,c)

>>> Seq.fromList [] ^@? iix 2
Nothing

class Prefixed t

lens Control.Lens.Combinators

No documentation available.
class Suffixed t

lens Control.Lens.Combinators

No documentation available.
classUnderscoreNoPrefixFields :: LensRules

lens Control.Lens.Combinators

Field rules for fields in the form _fieldname (the leading underscore is mandatory). Note: The primary difference to camelCaseFields is that for classUnderscoreNoPrefixFields the field names are not expected to be prefixed with the type name. This might be the desired behaviour when the DuplicateRecordFields extension is enabled.
classUnderscoreNoPrefixNamer :: FieldNamer

lens Control.Lens.Combinators

A FieldNamer for classUnderscoreNoPrefixFields.

iix :: Ixed m => Index m -> IndexedTraversal' (Index m) m (IxValue m)

lens	Control.Lens.Combinators

An indexed version of ix.

>>> Seq.fromList [a,b,c,d] & iix 2 %@~ f'
fromList [a,b,f' 2 c,d]

>>> Seq.fromList [a,b,c,d] & iix 2 .@~ h
fromList [a,b,h 2,d]

>>> Seq.fromList [a,b,c,d] ^@? iix 2
Just (2,c)

>>> Seq.fromList [] ^@? iix 2
Nothing

makeFieldsNoPrefix :: Name -> DecsQ

lens Control.Lens.Combinators

Generate overloaded field accessors based on field names which are only prefixed with an underscore (e.g. _name), not additionally with the type name (e.g. _fooName). This might be the desired behaviour in case the DuplicateRecordFields language extension is used in order to get rid of the necessity to prefix each field name with the type name. As an example:
```
data Foo a  = Foo { _x :: Int, _y :: a }
newtype Bar = Bar { _x :: Char }
makeFieldsNoPrefix ''Foo
makeFieldsNoPrefix ''Bar
```
will create classes
```
class HasX s a | s -> a where
x :: Lens' s a
class HasY s a | s -> a where
y :: Lens' s a
```
together with instances
```
instance HasX (Foo a) Int
instance HasY (Foo a) a where
instance HasX Bar Char where
```
For details, see classUnderscoreNoPrefixFields.
```
makeFieldsNoPrefix = makeLensesWith classUnderscoreNoPrefixFields
```
prefixed :: Prefixed t => t -> Prism' t t

lens Control.Lens.Combinators

A Prism stripping a prefix from a sequence when used as a Traversal, or prepending that prefix when run backwards:
```
>>> "preview" ^? prefixed "pre"
Just "view"
```
```
>>> "review" ^? prefixed "pre"
Nothing
```
```
>>> prefixed "pre" # "amble"
"preamble"
```
suffixed :: Suffixed t => t -> Prism' t t

lens Control.Lens.Combinators

A Prism stripping a suffix from a sequence when used as a Traversal, or appending that suffix when run backwards:
```
>>> "review" ^? suffixed "view"
Just "re"
```
```
>>> "review" ^? suffixed "tire"
Nothing
```
```
>>> suffixed ".o" # "hello"
"hello.o"
```
underscoreNoPrefixNamer :: FieldNamer

lens Control.Lens.Combinators

A FieldNamer that strips the _ off of the field name, lowercases the name, and skips the field if it doesn't start with an '_'.

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